Modulus Operator

[theRegex]

We're starting a new project that will use tons of animation and decided Rescript is a strong candidate - we love it's support for React. During our testing phase we discovered there seems to be no modulus operator, for exmaple:

let a = b mod c;

This is well implemented in Reason, https://reasonml.github.io/api/Pervasives.html#VAL(mod).

Are there any plans to add support for this in Rescript?

[fhammerschmidt]

No plans, but there is a built-in function that you can use with the pipe-operator

let a = b->mod(c)

ReScript tries to keep the reserved keyword space as small as possible and decided to make almost everything a function instead of an infix operator.

There exists also a prototype for custom infix operators which would enable you to assign the modulo function to an arbitrary string, but there seems not to be too much interest by the community.
#6076

OTOH I guess a fixed % as in JS would not hurt

[theRegex]

@fhammerschmidt Thanks, mod(a, b) works for what we need.

[namenu]

Since ReScript is promoting syntactic features that make it look more like JS, I think it's a good idea to have the %, <<, >>, >>>, **, etc. be the same.

[theRegex]

@namenu I agree, although mod() works for me specifically - if ReScript is promoting syntatic features that resemble javascript then at minimal all basic arithmetic syntax should be honored - even more, almost all other languages support %, imo it's simple to get right. I'm not a huge fan of Typescript but atleast it allows all javascript abilities, devs use Rescript and Typescript because javascript is not good enough - so I'm not pushing to make Rescript exactly like javascript but ateast include the basic syntax that most strongly typed ML languages support.

On a good note, I like that Rescript is TRUE static typing and can really be a contender in the cross-platform space.

Can you guys please consider completing the arithmetic components of your compiler?

[cometkim]

Since ReScript is promoting syntactic features that make it look more like JS, I think it's a good idea to have the %, <<, >>, >>>, **, etc. be the same.

% infix operator is coming to ReScript v12, and works with all supported primitive types by #7057

any other existing JS operators too.